/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package servlet;

import entity.Book;
import entity.EntityManagerHelper;
import java.io.IOException;
import java.io.PrintWriter;

import java.util.List;
import javax.persistence.EntityManager;
import javax.persistence.Query;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import util.Utilities;

/**
 *
 * @author Administrator
 */
public class BooksServlet extends HttpServlet {

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            EntityManager em = EntityManagerHelper.getFactory().createEntityManager();
            Query query = em.createQuery("Select b from Book b");
            try {
                List<Book> books = query.getResultList();

                

                for (Book b : books) {
                    out.println("Name: " + b.getName());
                   // out.println("Author: " + b.getAuthor());

                    out.println("<br/>");
                }
            } catch (Exception e) {
                //return false;
            } finally {
                em.close();
            }
        } finally {
            out.close();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     */
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     */
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     */
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
